/*
 * Copyright 2010-2015 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jetbrains.kotlin.idea.editor.fixers

import com.intellij.psi.PsiElement
import com.intellij.lang.SmartEnterProcessorWithFixers
import org.jetbrains.kotlin.idea.editor.KotlinSmartEnterHandler
import com.intellij.openapi.editor.Editor
import org.jetbrains.kotlin.psi.KtWhenExpression

class KotlinWhenSubjectCaretFixer : SmartEnterProcessorWithFixers.Fixer<KotlinSmartEnterHandler>() {
    override fun apply(editor: Editor, processor: KotlinSmartEnterHandler, element: PsiElement) {
        if (element !is KtWhenExpression) return

        val lParen = element.leftParenthesis
        val rParen = element.rightParenthesis
        val subject = element.subjectExpression

        if (subject == null && lParen != null && rParen != null) {
            processor.registerUnresolvedError(lParen.range.end)
        }
    }
}
